[caffe] remove some unnecessary exported_preprocessor_flags (#80063)
Summary: Move caffe2 compiler flags out of exported_preprocessor_flags, these should only contain defines and includes.
Test Plan:
Flags before: P510631359
Flags after: P510631375
Removed compiler flags are not present in exported preprocessor flags any more and exported preprocessor flags are not duplicated in compiler flags:
{F745125320}
Reviewed By: smeenai
Differential Revision: D37288331
Pull Request resolved: https://github.com/pytorch/pytorch/pull/80063
Approved by: https://github.com/mehtanirav
